AV 2351 then UA 762 at San Francisco
Denver → San Francisco → Seattle
Timetable, San Francisco time
23:09AV 2351 from Denver at the gate
18:30UA 762 to Seattle leaves the gatealso LX 3256, AZ 4515, NH 7304, VA 8284, NZ 9400
19 h 21 apart on the timetable, overnight
UA 762 leaves 19 h 21 after AV 2351 arrives on the timetable: more than half a day, so not a connection we count.